Cook stove



L. B. DE LAITTE.

(200K STOVE.

APPLICATION FILED APR.2I, 1920.

' Patented J une-27, 1922.,

2 SHEETS-SHEET l.

Z Z 5/ W, 8 Il',

/Z 27d/ZZ /0 Z/d/ INVENTOR W-lT/I/Essl A I t/M4,

@um *w' ATTORNEYS L. B. DE LAITTE.

' 000K sTovE.

APPLICATION FILED APR.21, 1920.

V14,420,688., I Y 1 Patented June 27, 1922.

2 SHEETS-.SHEET 2.

0400 0.00 OOO O00 O00 OOO OOO 000 O00 0" 1N VENTQR WITNESS eopazlg 3 d? [aug l a ATTORNEYS- stares rarest i I-.EoPoLD B. DE LAITTE, or siiN FRANCISCO, CALIFORNIA, assiofNon, iivjivinsiviiv ASSIGNMENTS, 'ro MAY ERDIN, orsAN FRANCISCO, CALIFORNIA;

CooK s'rovn.,Y

1,420,6ssl

To all whom may concern-li. 1

vBe it lmownthat I, LEOPOLD B. DE LAITTE,

a citizenof the Republic of France,and` a resident of the city and county of SanF ranciscofState' of -California,have invented eertain'new and'usefullinprovements iii Cook Stoves, ofwhich the following is aspecification.

This invention relates to cook stoves anda'rticularl 'tovas ran 'es and ovens.

One of the objects of the present invention is'toiprovid'e an'improved gasstove having a heating unit, or system of heating units, disposed so as to become incandescent with the heat of combustionv of fuel at a.con'

, tiguous b-urner tip -or outletfand av further object of tlieinvention is to provide a-lieat'- ing unit of highly refractory materiali and which is constructed v,and arrangedto become incandescent'for the efficient heating of a `top plate of the range; Y,

A further vobject of the invention -is to provide in combinationfwith an .incandesf cent heatingL unit, or set' of such units, a are# fractory bed or block member to receive-heat of combustion and in which the heating unit or units may be compactly arranged.

A further object of the invention is to improve the heating efficiency of gas rangesby the provision of refractory bed or block members arranged below thei topjplane of tlie range and to provide a top plategand to arrange such block members to facilitate 'the combustion of vfuel atthe.` burners and to vvconduct the consumed and wastey gases readily ,from the` re yor4 combustion space l Vformed at and bythe blocks'.

Afurther object-of theinvention is to provide means for the Vready ignitionvof a unit', or set of heating units, and to provide for the heating of any particular portion of the top p-late of the'range or the ventire body of the top plate.l

` A further 4object of the invention is to p rovide an improved gas range with heatingV units that may be rendered incandescent and Vthat may be easily installed andas easily the foregoing, will be made manifest inthe ,Specification of Lettersatenti vf[3g,\,1;e1115dijun 27, o Application iiearapriiei, i920. sei-iai 'No.svaiz?, 'i i i following description of the preferred l' sricgf of the 'invention' which' is illustrated in the i drawings accompanying and forming l partof the specification. It is-to bel'understo'od`l .that it is notintended to limit thek invention`` to the embodiment shown vby 'thel said'draw- Referring to the drawings 1 Figure* l isa perspective of oneltypeof 1 i range or stovey in which the inventionisfiii'- Figure 2'is aplan `view ofthe improved the airv admission ports.

Figure 8 is a vertical sectionfon linejS-#Bf' i l 0f Fig. 2.

Figure 4 is a perspective of one of the de-l tachedrefractory body meinbersjor blocks.

range vpartly infhoriz'ontal section to show i' Figure 5 is a perspective of one of the detached'heating units. I y

1 Fig. 6 is a' perspective of onejof themantesgf l y The improved:features` of the'pres'ent con.y

struction may be readily'adap'ted tovarious types of ranges, stoves and ovens, a form of which is indicated as comprising a lower casing and shelf .forming partQ thatimay be" supported onA suita'ble'legs at the corners, f this casing preferably being of,sheetfmetalv for economy in cost ofvconstruction ,andin weight', although vit `may 4be of other suitable method of construction.r The upper portion' y of the casing or'boX 2 isprovided withv a, i `topand surrounding flange or plate 4 proof suitable dimensions, according to the -size of the stove, and this opening is preferably closedl vided with a central openingl by a top plate or cover 6v of suitable ma `A v terial andl which, while shown imperforate,

apertures "forming windows i" 1 absence of combustion of'the'burner meansv and heating kunits hereinafter described-` Y T he .platel 6 is preferably removably ar? niay have 1 through which may be observed the state'for ranged so that it maybe renewed, if neces#` sary, and may resti,l wlienapplied, upon any' opening 5. A o y At a suitable distance 'below this top flange Il and the top plate V6 there is provided aL .I

bottom plate or shelf 10 forming, vvitlithe` vsuitable supporting means',as srnall`brackets tion on bottom 10 with their adjacent edgesV or faces 13 spaced sufficiently to form a pas- -sage way for the products of combustion rearwardly toward an outlet 14 to which may be connected the usual vent pipe indicated at 15.v The parallel edges 16 of the blocks or refractory members 12 are disposed adjacentthe side walls 2 which arel shown as provided with ports or openings 2L for burners. Fuel is supplied to the burners by gas pipes 17 yand 18 arranged in sets adjacent the sides of the range and each ofl which pipes has a plurality of laterally directed burners 19 and the forward ends of which pipes are provided with respective valves 20 which, when open, permit the entrance of fuel into the pipes 17-18 to supply fuel for combustion. Y

Each'of the blocks 16 is provided with. a series of pockets or recesses 21 extending substantially transversely from one edge 13 to the opposite parallel edge 16 of a given block and thesefpoclrets 21 have an u pwardly, inwardly Yinclining bottom 22 terminating near the inner edge 13 of the bloc'lr in an end wall 23 which is shown as extending up to the top surface of the block, the latter being provided with an escape duct or channel 2e, one for each pocket 21. vWhile the blocks 16 are here shown as provided with five recesses or pockets 21, it is obvious that any number more or less may be provided as desired as, for instance, according to the size of the range to be constructed and in combination with which the improved heating means is to be utilized, and the block may have apertures 21a.

Associated with the refractory blocks 12 is a set of heating units 25,-one of which is shown inFig. 5, and such heating unit will l be hereinafter termed a mantle without any intended limitation as to the character and function of such device. The mantle is preferably made of highly refractory material the inclination of the bot-tom 22 of a pocketv 21 so that the outer or top face 26 of each mantle 25 will lie substantially flush with the vtop plane of its bed or block member 12. The top face 26 of the mantle is shown as perforated at 27 and the back is also made Y Y foraminous and may be provided with out wardly extending projecting port-ions such as ribs 28 so as to provide a passage way between the bottom surface of the applied mantle 25 and the surface of the bottom 22, and the sides of the mantle 25 may also be spaced from the adjacent side walls of the recess 21. lf desired, the inner surface of. the mantle may be provided ywith heaty absorbing protuberances or projections 29. The mantles are-of such length that when they arefdisposed in their respective recesses or pockets 21 in the blocks 12 the open, Y

larger ends of the inantles,vr substantially aline with the edge or lface 16 of Athe block, and the pockets 21 are so placed that when the block is applied in the space 11, and sup ported on thebottom or shelf portion 10, the mouths in the larger ends of the mantles are respectively disposed opposite to the fuel supply tips or nozzles 19. Therefore, when fuel is admitted, for instance, to one of the pipes 17 or 18,one of which is shown as extending inwardly soV as tov serve the first three mantles in the-ir recesses, then the fuel from the pipe nozzles or tips 19 is directed toward Vand into the ,adjacent mouths of the mantles 25. vEach pipe 18 isk shown arranged to serve the rearmost two units or mantles 25 in the respective side blocks12.

Preferably the open mouthrof each burnerrris provided with a thimble-lilre burner part 30 and the inner end of this member 30 is provided with a foraminous portion 31 in the form of a wire gauze, or other device.

To facilitate ignition of the fuel, a suitable igniting means is utilized comprising, A1n the present case, a small tube 32 connected` to the gas -service and which is provided with a. valve 33,'there being one of these ignition tubes along'the top face of the blocks 12, and these tubes are provided ywith apertures commencing at a point inA that portion of the pipe which projects beyond the front wall of the casing 2 and thence being disposed in -such juxtaposition, and

extending inwardly along the upperv surface of the ignition tube, that when the valve 33 is opened, and a match or other means applied to ignite the fuel, the latter'as it issues from the series of apertures will be quickly ignited by a train-like travel of the fiame along the top of the pipe in the line of apertures. Y Y

lt is to be understood that the improved heating combination may vbe positioned as desired in a stove or heater in which it may be utilized. Y

What is claimed is:

l. A gas cook stove having a combustion ioo chamber, a heat-insulating bed arranged in said chamber, and an incandesceent heating body disposed upon the bed below the top 'plane of the stove.

` chamber, and a set of heating units disposed upon the bed belowV the top plane of the stove, and means for igniting fuel at different sections of the set of units.

4. A gas cook stove having a combustion chamber, a refractory bed arranged in said chamber, a set of refractory mantlesdisposed on the bed, and means for supplying fuel to the mantles.

5. A gas cook stove having a combustion chamber, a refractory bed arranged in said chamber, refractory bodies disposed on the bed, and means for supplying fuel to the bodies, the bodies being sunk in the top face of the bed.

6. A gas cook stove having a combustion chamber, a refractory bed arranged in said chamber, a set of refractory mantles disposed on the bed, means for supplying fuel to the mantles, the mantles being sunk in the top face of the bed, and a top plate arranged just above the plane of the top faces of thel bed and mantles. Y

Y7. A gas cook stove having a combustion chamber, a refractory bed arranged in said chamber, a set of refractory mantles Adisposed on the bed, and means for supplying fuel to the mantles, the refractory bed provided with passages for radiation of heat therethrough.

8. A gas cook stove having a combustion chamber, a sectional refractory bed arranged in said chamber, a set of refractory mantles disposed on the bed, and means for supplying fuel to the mantles, the refractory bed sections providing an intermediate escape passage for products of combustion and havlng grooves or channels in its top surface leading to said passage and from the mantles. Y

9. A gas cook stove having a combustion chamber, a bed-forming block of refractory material disposed in said chamber 'and having a series of recesses or pockets opening at one of its side faces; a series of refractory, heating units arranged in said pockets and having open ends at the said side faces, and means for introducing fuel mixture into the units to render the latter incandescent `by combustion of fuel therein.

10. A gas cook stove having a combustion chamber, a bed-forming block of refractory material disposed in said chamber and havfuel combustion.

ing a lurality of series of parallel recesses or poc ets openingA at one of its side faces;

refractory bodies arranged in saidpocketsand an intermediate passage between the series of recesses for escape of gases of comf bustion, and means for introducing fuel mixture into the' recesses to render the bodies incandescent by combustion of fuel therein-.7

, 11. A gas cook stove vhavinga combustion I chamber, a -'bed-forming blockv of heating insulating material disposed in said chamber and having a series of recesses or pockets opening at one of its side faces; refractory heating bodies supported in saidpockets and exposed at their top faces to radiate heat, and means for introducing fuel mixture into the` recesses to render they bodies incandescent by combustion o-f fuel therein.

12. A gas cook stove having a combustion d' chamber; a set `of bed-forming blocks of insulating material arranged' in spaced relation to each other and to the side walls of thesaid chamber and having pockets in their top faces; refractory heating bodies disposed in said pockets, and means for in# trodu-cing fuel mixture into the pockets 4so that the bodies are rendered incandescent by 13. A gas cook stove having'al combustion chamber with an escape opening for gaseous products of combustion; a set of bed-form-v ingfgblocks ofrefractory vmaterial arranged in spaced relation to eachothervand to the side walls of the s'aid chamber and' having elongated pockets in 'their top faces; refractory heatingbodies disposed in said pockets,

and means for introducing fuel mixture into the pockets so that the bodies are rendered i i incandescent by fuel combustion. Y

1 4. A gas cook stove having a combustion chamber; a set of bed forming blocks of re-- fractory material arranged inspaced rela-r tion toA eachother and to the side wallsof y the said Chamberland having .A elongated pockets in their top faces; refractory heating units disposed in saidV pockets, means for introducing fuel mixture into the heating units so that they are rendered incandescent by fuel combustion, and yatop platecoverp ing the bed and units.

15. A gas cook stove havinga combustion chamber; a bed forming block of refractory material arranged in said chamber and havi ing elongated pockets; refractory heating units disposed in said pockets, Vmeans, for introducing fuel mixture into vthe pockets so that the units are rendered incandescent by fuel combustion, and pilot or igniting means extending from an exposed position, for

access,inwardly along the units to facilitate ignition of the fuel.` Y

1n testimonyv whereof, I have hereunto set m hand. v Y

y LEOPOLD B. DE LAIYTTE. 

